globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2016.05.040
Scopus记录号: 2-s2.0-84974588126
论文题名:
Diachronous retreat of the Greenland ice sheet during the last deglaciation
作者: Sinclair G.; Carlson A.E.; Mix A.C.; Lecavalier B.S.; Milne G.; Mathias A.; Buizert C.; DeConto R.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 145
起始页码: 243
结束页码: 258
语种: 英语
英文关键词: Deglaciation ; Greenland ice sheet ; Holocene ; Ice-sheet models ; Model-data comparison ; Radiocarbon dating ; Surface exposure dating
Scopus关键词: Climate change ; Glacial geology ; Glaciers ; Deglaciations ; Greenland Ice Sheet ; Holocenes ; Ice sheet models ; Model-data comparisons ; Radiocarbon dating ; Surface exposure dating ; Ice ; beryllium isotope ; carbon isotope ; climate change ; climate modeling ; continental shelf ; deglaciation ; geochronology ; Holocene ; ice-ocean interaction ; last deglaciation ; radiocarbon dating ; reconstruction ; warming ; Younger Dryas ; Arctic ; Greenland ; Greenland Ice Sheet
英文摘要: The last deglaciation is the most recent interval of large-scale climate change that drove the Greenland ice sheet from continental shelf to within its present extent. Here, we use a database of 645 published 10Be ages from Greenland to document the spatial and temporal patterns of retreat of the Greenland ice sheet during the last deglaciation. Following initial retreat of its marine margins, most land-based deglaciation occurred in Greenland following the end of the Younger Dryas cold period (12.9-11.7 ka). However, deglaciation in east Greenland peaked significantly earlier (13.0-11.5 ka) than that in south Greenland (11.0-10 ka) or west Greenland (10.5-7.0 ka). The terrestrial deglaciation of east and south Greenland coincide with adjacent ocean warming. 14C ages and a recent ice-sheet model reconstruction do not capture this progression of terrestrial deglacial ages from east to west Greenland, showing deglaciation occurring later than observed in 10Be ages. This model-data misfit likely reflects the absence of realistic ice-ocean interactions. We suggest that oceanic changes may have played an important role in driving the spatial-temporal ice-retreat pattern evident in the 10Be data. © 2016 Elsevier Ltd.
资助项目: Funding for this research was provided by the National Science Foundation (PLR-1418074 to AEC and PLR-1417886 to RD), and an Oregon State University Provost Fellowship and a National Science Foundation Graduate Fellowship to GS. Inspiring discussions from the PAGES/INQUA working group PALeo constraints on SEA level rise 2 (PALSEA2) are acknowledged. Two anonymous reviewers, Vincent Rinterknecht and Nicolaj Larsen helped improve earlier versions of this paper.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59544
Appears in Collections:过去全球变化的重建

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作者单位: College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, United States; Department of Physics and Physical Oceanography, Memorial University, Canada; Department of Earth and Environmental Sciences, University of Ottawa, Canada; Department of Geosciences, University of Massachusetts, Amherst, United States

Recommended Citation:
Sinclair G.,Carlson A.E.,Mix A.C.,et al. Diachronous retreat of the Greenland ice sheet during the last deglaciation[J]. Quaternary Science Reviews,2016-01-01,145
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